Stop mechanism.



W. E. E. MILZ.

I STOP MECHANISM.

APPLIOATIQN FILED OUT. '7, 1911. 1,031,806. Patented July 9,1912.v

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W. E. E. MILZ.

STOP MECHANISM. APPLICATION FILED 00w. 7, 1911.

Patented July 9, 1912.

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WALTER E. E. MILZ, OF NEW YORK, N. Y., ASSIGNOE TO PHINNEY-WALKER KEYLESS CLOCK COMPANY, OF NEW YORK, N. Y., A CORPORATION OF MASSACHUSETTS.

STOP MECHANISM.

Specification of Letters Patent.

Application filed October 7, 1911.

Patented July 9, 1912.

Serial No. 653,378.

To all whom it may concern Be it known that I, WVALTER E. E. MILZ, a subject of the Emperor of Germany, residing at New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Stop Mechanism, of which the following is a specification.

This invention relates to stop mechanisms for time pieces, and especially adapted and intended for use in connection with clocks in which the spring may be wound or the hands may be set by rotation of a casing which surrounds the movement, the casing being pulled in or out to respectively engage spring winding gearing, and hand setting gearing. Clocks of this type have heretofore been disclosed in my Patent No. 1009773 and pending applications Nos. 638,343 and 6 13311.

The present invention is illustrated as applied particularly to the clock shown in the last mentioned application, No. 6t3,311, in which the hand setting gearing incloses an arbor at the central axis of the movement, on which is a clutch which is operated by shifting the casing when the hands are to be set.

It is desirable for various reasons to provide such clocks with a stop seconds hand, and it is the object of the present invention to do this. It is to be understood, however, that the invention may be applied to clocks having a differentconstruction to that disclosed in the applications above referred to, and no limitation in this respect is implied.

The invention is illustrated in the accompanying drawings in which-- Figure 1 is a plan view illustrating the stop mechanism in engagement, the dial plate and parts above the same being removed. Fig. 2 is a similar view with the stop mechanism disengaged. Fig. 3 is a central longitudinal section of the clock.

Fig. 4c is a side elevation of a part of the movement. Fig. 5 is a detail showing the push button for actuating the stop device. Fig. 6 is a detail in section showing a spring to support the bezel which holds the lass.

:3 Referring specifically to the drawings, 15 indicates an arbor at the central axis of the movement, which is driven from the spring barrel 16 by a train including a gear 17 on the barrel, a pinion 18 and gear 19 on an intermediate arbor 20, a pinion 21 and gear wheel 22 on the arbor 15. The pinion 18 and gear 19 are only friction tight on the.

arbor 20, and the pinion 21 and gear 22 are only friction tight on the arbor 15. In my application No. 6a3,311, above referred to, the arbor 15 extends through the dial plate and carries the hands, in a known manner, but in the present invention this construction is-modified, and instead of extending through the top plate 23 of the movement, the arbor 15 has a bearing therein, at the top, as indicated at 16, and the power of the spring is communicated to the hands from the arbor 20 of the movement, which above the top plate carries a gear 24: which meshes with a pinion 25 on the quill 26 which carries the minute hand 2?, and said arbor 20 also carries a gear 28 which meshes with a gear 29 on the quill 30 which carries the hour hand 31. The hands, therefore, instead of being carried by the central arbor as usual, are driven by motion transmitted through the gearing above described from the arbor 20. The wheel 22 is connected to the escapement by a suitable and known train, which need not be described here, but which includes an arbor 32 which turns once a minute, as usual, and which extends through the front plate 23 of the movement and drives the stop hand in a manner to be presently described.

As disclosed in my application above referred to, when the inner casing 7 is pulled out the arbor 15 is engaged to set the hands by turning the inner casing, and for this purpose it is provided with a gear wheel 33 fast thereon and meshing with a wheel 3 1 which is fast on the arbor 20, and during this action the friction tight gears 18 and 19 and 21 and 22 slip on their respective arbors. hen the hand setting devices are disengaged, the wheels 33 and 3 1 turn idly with the arbors.

Mounted upon the front plate 23 is a bridge 35 which forms a support for the quills 26 and 30 and which is also provided with a tubular bearing 36. The stafi or arbor 37 which carries the seconds or stop hand 38 extends through this tube, at the central axis of the clock, and has a bearing at 38 on the front plate 23. Under the bridge, the arbor 37 has thereon a gear wheel 39, which is capable of being engaged by a gear wheel a0 carried by a lever 4L1 which is pivoted at 42 to the top plate, and the gear wheel ll) is in mesh at all times with a gear wheel a3 at the upper end of the arbor 32 which, as stated, forms a part of the escapement train and which turns once a minute. lVhen the gears 39 and 40 are engaged the seconds hand 38 is driven, and when disengaged, it is stopped. A spring la-l tends to throw the lever d1 to engage said gears. indicates cam wheel which has notches 46 into which the bevel point 4:7 of the lever 41 will drop when it registers with said notches. tigid with the cam wheel a5 is a gear 4:7, and these parts turn on a stud 48 on the front plate. The wheel l7 meshes at a right angle with another wheel 49, the arbor 50 of which is carried by a block or bracket 51 on the underside of the front plate, and said arbor 50 also carries a ratchet wheel engaged by a spring pawl at the lower end of a push pin 5% which works through a hole in the dial plate 55 and projects above the dial to contact with a projection 58 on the inner side of a bezel 57 which holds the glass At a diametrically opposite point the bezel 57 is hinged at 59 to the dial plate. To cause the stop hand 33 to fy back after each operation a lever 0 is provided, and one end is pointed as at (51 to drop into one of the notches 4-6 by the force of spring 62. The other end of the lever 60 which lever is pivoted at 63, arranged to strike a heart cam G l on the arbor 37 of the seconds hand, and this action takes place when the point (31 of the lever 60 rides up onto one of the rises of the cam wheel 45, as shown in Fig. 2. This return action is common in stopping moven ents. The inner casing 7 carries a rim 8, as disclosed in my said application, by means of which the casing may be pulled out or pushed in, and turned, to set the hands or wind. the spring. The rim 8 laps the bezel 57, as indicated at S, and a packing ring 8 is inserted between the rim and the bezel, to prevent the entrance of dust.

The stop hand may be driven by other devices .if desired, the invention relating especially to the means for operating the stop mechanism.

In the operation of the parts above described, when pressure is applied to the face of the glass 53, and it is pushed in, it forces in the pin 5-it, wnich turns the ratchet 52- one step, and this by means of the intermediate gears 50 and 47 turns the cam wheel 45, and when a notch as is registered with the point 47 the lever ll is pulled in by the spring -l l-, engaging the gears 40 and 39 and permitting the seconds hand to be driven from the arbor 32 through the gears 43, 40, 39, and arbor 37, the lever 60 being at the same time lifted from the heart cam, shown in Fig. 1, in consequence of the drop of the point 61 into'one of the notches l-G, and the seconds hand continues to move until the glass is again pushed in, which turns the cam wheel 45 and swings the lever ll to disengage the gears a0 and 39, and stop the seconds hand, and another push will then lift the point (31 from the notch 1:6 and throw the opposite end of the lever 60 against the heart cam, which returns the seconds hand to original position. A spring serves to lift the pin 54, after the pressure thereon is released.

In consequence of the construction shown and described, the in and out shift of the casing 7 and the rotation thereof for setting the hands or winding the spring, as disclosed in my said applications, is not interfered with, the use of the additional bezel 57 to hold the glass permitting the rim 8 to be pulled out or turned as desired.

Although described in connection with a clock having a shifting and rotatable casin it will be obvious that the oieratin D7 C) devices for the stop movement may be applied to a clock having a fixed casing. That is, assuming that the casing 7 and rim 8 are fixed, the bezel 57 may be nevertheless pushed in to operate the push pin for the purpose stated.

1. The combination with a clock or watch movement, and its casing, of a stop hand and means to drive the same by said movement, and means to manually control the operation of said stop hand, including a hinged bezel which may be pushed in to ac tuate said means.

2. The combination with a clock or watch movement, and its casing, of a stop hand and means to drive the same by said movement, and means to manually control the operation of said stop hand, including a bezel movable in and out to actuate said means.

3. The combination with a clock or watch movement and its casing, of a stop hand, and means to drive the same by said move ment, of means to manually control the operation of said stop hand, including a push pin located behind the bezel, and a bezel bearing upon said push pin and movable in and out, so that the push pin may be operated by pressure on said bezel.

In testimony whereof, I afiix my signature in presence of two witnesses.

TVALTER E. E. MILZ.

"Witnesses GEO. E. Tnw, Enrrn L. SMITH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latents, Washington, D. G. 

